Matter
- Name
- Mg-Fe-Al-silicate glass with Al(Al+Si)=0.25
- Family
- solid
- Database
- Experimentalists
- Level
- local matter
- Origins
- laboratory
- Provider
- Astrophysical Institute and University Observatory Jena
- Preparation
- selected components
- Method
- selection of homogeneous glassy parts under microscope inspection
- Phase type
- solid
- Texture
- compact glassy
- Type of porosity
- without pores
- Density
- 3.1 $\pm$ 0.03 $g.cm^{-3}$
- Grain density
- 3.1 $\pm$ 0.03 $g.cm^{-3}$
- Oxides
-
Formula $MgO$ $Fe_{2}O_{3}$ $Al_{2}O_{3}$ $SiO_{2}$ Mass fraction (%) 0.146 0.285 0.127 0.439
- Title
- Melting and quenching by copper rollers
- Matter
- Mg-Fe-Al-silicate glass with Al(Al+Si)=0.25 (this matter)
- Processing steps
-
Step Date Type Process Changes #1 mixing magnesium carbonate, ferrous oxalate, aluminium oxide, and silicon dioxide are mixed in appropriate portions #2 thermal filled in platinum crucible, slowly heated by a resistance furnace to 1823-1923 K, maintained for 1 hour #3 thermal quenched to room temperature by contact with rotating copper rollers